_:b668238906 . _:b668238906 . _:b668238906 "The weight of the right atrium, the upper right chamber of the heart which empties into the lower right chamber, i.e. the right ventricle. Weight is the heaviness or degree to which a body is drawn to the earth by gravity."^^ . _:b668238906 "Dorland:Dorlands_Illustrated_Medical_Dictionary--31st_Ed"^^ . _:b668238906 . _:b668238906 . _:b668238906 "ISBN:978-1416049982"^^ .